Kuhn Rikon Pressure Cookers are constructed of 18/10 stainless steel with a solid aluminum core sandwiched between the layers of stainless, for even browning and rapid heat absorption. You will enjoy the ease and special features with the interior fill lines, automatic lid-locking system, and spring-loaded pressure release valve that takes the guesswork out of pressure cooking. Included is a Quick Cuisine Cookbook & stainless steel steam trivet. Kuhn Rikon Pressure Cookers provides healthier meals and saves you time. The 8-quart Pressure Cooker is a great all-around cooker for large families and ideal for making soups, stocks, stews, chili, 4-lb. roasts, whole chickens and will accommodate dinner for 10 to 15 people. Made in Switzerland; 10-year Warranty.